How to check whether magnesium oxide is expired by transformation?

How to check whether magnesium oxide is expired by transformation?

Conduct a preliminary check. Under normal circumstances, magnesium oxide should be a white powder. If magnesia erupts, change, facial expression can break out change. In addition, the whiteness of magnesium oxide is low, and the activity of magnesium oxide is also known to change. Other, if the phenomenon of magnesium oxide can be observed obvious changes (caking, etc.), the nature is not uniform, usually do not view the application.

Check the deposit clause of magnesia: magnesia is a kind of extremely simple material that absorb water and be affected by moisture, if did not do moistureproof homework word in the process that be afraid to be transported in store, very or can cause magnesia to denaturefy, lose use cost. In ordinary operations the following routes can be used to build magnesium oxide to contain water absorption disintegration.

Cover plastic film, plastic film on the floor, if not willing to pour the bag for packaging, you can choose this gradually moisture-proof;

Placing the lime blocks after stacking to protect them from moisture is another way of preventing magnesium oxide from absorbing moisture and reducing its activity;

Because calcium oxide has stronger moisture absorption, calcium oxide is placed in the hotel as a moisture reducing agent to reduce the humidity of the warehouse, which is very effective.

If there is no significant change on the surface of magnesium oxide, we advocate the new inspection of the activity of magnesium oxide, magnesium oxide inspection through the specialized examination equipped, can be quantitative, detailed determination of the activity of magnesium oxide. Ensure that the product is not placed for too long, so that the activity will decline, misuse, and then affect the quality of the product.